Door-jamb for coke-ovens.



. E. H. ABRAHAM. DOOR JAMB FOR COKE QVENS.

APPLICATION FILED NOV- 30, 1906.

WITNESSES: INVENTOR 9 y us army, {M i ez PATBNTED DEG.. 10, 1907.

ENoon H. ABRAHAM,

-ENT carton. I

OF UNIONTOWN, PENNSYLVANIA, ASSIGNOR TO COVINGTON DOOR .TAMB COMPANY, ACORPORATION OF MAINE.

DOOR-JAMIE FOR COKE-OVENS.

Specification of Letters Patent.

Patented Dec. 10,1907

Application filed November so. 1906. Serial No. 345590.

coke oven, and particularly for use in connectionwith that class ofbeehive coke oven from which the coke is drawn by mechanical means.

In the ordinary method of drawing beehive coke ovens by mechanicaldevices, a shovel is introduced, WhiCltlS mounted at the end of areciprocating bar on some sort of machine which moves the shovel intothe coke furnace underneath the coke, moves it from side to side as maybe deemed necessary, and subsequently draws the same and by mechanicalmeans or otherwise discharges the coke therefrom. 4

In the practice as it now exists in construction the door is formed offire clay jambs and arch blocks. Now in the mechanical drawing of thecoke, the inserting and drawing of the apparatus that withdraws the cokeor discharges the coke, comes in contact with y the bottom jamb oneither side of the door,

and these jambs as now constructed of fire clay are very susceptible ofdamage by the contact of the implement used in this method ofextracting. As a result the lower jamb rapidly becomes worn away, andbeing the foundation of the entire door, results in the destruction-ofthe entire arch. Heretofore various efiorts have been made to obviatethis difficulty but without success. Now I have discovered that where acast iron bot tom jamb is used and is extended far enough into the cokeoven to protect the door frame from theeffect of the contact with thecoke extractor but not sufliciently far to come in contact with theextreme heat of the oven, a

-much more permanent structure is secured.

-' The invention will be best understood by a reference :to theaccompanying sheets of drawings, in which Figure 1 is a plan view of anordinary beehive oven on the line 1 1 of Fig. 2; Fig. '2 is a verticalsection of the oven on theline 22 of Fig. 1, showing the construction;Fig. 3 is a front view of the door; Fig. 4 is a plan view of the jalnb;Fig. 5 is a side view of the jainb, and Fig. 6 is an end view of thejamb.

In the drawings A represents the oven,

C the bottom of the furnace, and D the door;

O the o ening in the top, and K the top wall; 1, 2 8.11 3 represent thejamb blocks, 3 being the jainb shown in Figs. 4 and 5, put in place. Thejamb consists. of a casting of iron or other suitable metal,substantially of the form shown in Fig. 4. The outer end f issubstantially at right angles to the inner face of the jamb, and isprovided with an end e which turns in and serves to cover the jamb inthewall. The inner end terminates in an appropriate curve (1 as shown,and is provided at any convenient point with one or more webs. c which.serve to strengthen and stiffen the casting. The spaces between the websc and end f of the jamb, are filled in with brick and fire clay B intheordinary manner, but the s'pace between the end (1 and the web 0 isnot filled in so as to permit of expansion of the metal. The jam-b maybe of any convenient height, but in practice it will vary from 6!; to 8inches in eight. The curvature willvary from time to time according tothe size of the coke oven. In practice, one of these jambs is used oneither side of the door, their distance var 'ng in accordance with thewidth of the oor. They are laid on the foundation of the oven, and thefurnace is then built up over them and the bottom tiles are laid inagainst the metal jamb.

Insetting the jamb in the oven, it is so placed that the forward endwill extend. outward beyond the face of the ordinary red brick which isfilled in on the outside of the door when the latter is closed in theordinary way. As a result the outer end of the jamb is constantly exosed to the air, which has the effect of re ucing the temperature andkeeping it cooler than it would be if it were covered with brick. As aresult of the free circulation of the air at either end of the jamb, anordinary cast iron door j amb of the character shown will lastsubstantially as long as the oven inv which .it is placed.

I claim as m invention:

1. A metal oor jamb for use in connection. with beehive coke ovens,conforming in curvature to the curvature of the furnace,

and provided with a part at the inner end which is arranged not to beclosed. in by fire brick so as to permit of expansion and contraction.

2. The combination in the wall of a bee hive coke oven, of a metal doorjamb conforming inv curvature to the curvature of the oven so placedthat the same will not extend into the furnace to such a point as to besubjected to the extreme heat of the oven, and yet will protect theedges of the walls from destruction from coke extracting, and uninclosedby fire brick at the inner end so as to permit of expansion andcontraction.

3. The combination in the wall of a beehive coke oven 0m metal door jambconforming in curvature to the curvature of the furnace, so placed atthe inner end that the same will not extend into the furnace to such apoint as to be subjected to the extreme heat of the oven, and extendingextcriorly beyond the wall of the oven at the other end and uninclosedby fire brick at the inner end, so as to permit of expansionandrontrmlion.

4. The combination in the wall of a beehive -coke oven of the ordinarytype, of a metal door jamb conforming in curvature to the curvature ofthe furnace placed at th bottom of the door on either side below thebrickwork of the arch, extending a suitable distance into the interiorof the even, for the purposes of rendering the door practicallyindestructible to machine operation, and uninelosed by fire brick at theinner end, so as to permit of expansion and contrmttion.

In testimony, that I claim the l'oregoiin, as myinvention, I have signedin name in prcsence of two Witnesses, this 20 day of No vember 1906.

ENOCH H. ABRAHAIYI.

Witnesses:

T. E. CONN, W. C. Onown.

